Vacuum tube housing comprising a plurality of intermediate planar plates having non-monotonically aperture arrangement
CA 2420653 C · Owner: Intevac, Inc. · Inventors: Costello, Kenneth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A housing for microelectronic devices (see Fig. 1b) requiring an internal vacuum for operation, e.g. an image detector is formed by tape casting and , incorporates leads (38) between interior and exterior of said housing (10) where said leads (38) are disposed on a facing surface of green tape layers( 116, 120 and 118). Adjacent green tape layers (112 108 and 114) having , corresponding apertures (112' 110', 114') therein are stacked on a first closure member (26) to form a resulting cavity and increased electrical isolation or channel sub-structures are achievable by forming adjacent layers whith aperture dimension which vary non-monotonically. After assembly of the device within …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 15, 2001 and granted May 3, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 15, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 15, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.